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1
Quantum Chemical Investigations of the Mechanism of ...
1983-10-28

... This study involves: Ab-initio crystal orbitals and polymer orbitals; Ab-initio coupled cluster program; Ab-initio quantum chemical calculations and ...

DTIC Science & Technology

2
Chalcopyrite Magnetic Semiconductors: An Ab-Initio Study of ...
2001-04-01

... Title : Chalcopyrite Magnetic Semiconductors: An Ab-Initio Study of Their Structural, Electronic and Magnetic Properties. ...

DTIC Science & Technology

3
An Ab Initio Study of the Geometry and Rotational Barrier of 4 ...
1990-03-16

... Accession Number : ADA219907. Title : An Ab Initio Study of the Geometry and Rotational Barrier of 4- Phenylimidazole. ...

DTIC Science & Technology

4
AB Initio Study of the Electronic Magnetic Circular Dichroism ...
1991-01-15

... Title : AB Initio Study of the Electronic Magnetic Circular Dichroism ... functions are determined using as initio quantum chemical techniques including ...

DTIC Science & Technology

5
Ab Initio Study on Spin Polarization of III-V Compound Tips
1998-06-01

... ADP012740 TITLE: Ab Initio Study on Spin Polarization of III-V Compound Tips ... Ab initio study on spin polarization of III-V compound tips ...

DTIC Science & Technology

6
Ab Initio Potential Energy Surface for H + OCS Reactions ...
1994-11-01

... Results of this study substantiate findings from an earlier quantum chemical study using a lower ... for (I) and (II) based on the earlier ab initio study. ...

DTIC Science & Technology

7
An Ab Initio Study of Solid Nitromethane, HMX, RDX, and ...
2004-12-01

... from federally funded research, testing and training ... and agencies for Research Development Test and Evaluation ... Title : An Ab Initio Study of Solid ...

DTIC Science & Technology

8
An AB Initio Study of Dimethyl Nitramine.
1987-08-01

... from federally funded research, testing and training ... agencies for Research Development Test and Evaluation ... Title : An AB Initio Study of Dimethyl ...

DTIC Science & Technology

9
Ab Initio Study on Atomic Structures and Physical Properties of ...
2009-11-25

... Ab initio study on atomic structures and physical properties of CdSe quantum nanodots ... Figure 2. Diagram of covered nanodots. ...

DTIC Science & Technology

10
Ab Initio Study on Atomic Structures and Physical Properties of ...
2009-11-25

... Title : Ab Initio Study on Atomic Structures and Physical Properties of CdSe Quantum Nanodots. Descriptive Note : Final rept. ...

DTIC Science & Technology

11
Ab Initio Study of the Structure, Vibrational Frequencies and ...
1995-06-01

... from federally funded research, testing and training ... agencies for Research Development Test and Evaluation ... Title : Ab Initio Study of the Structure ...

DTIC Science & Technology

12
Ab Initio Study of Ultracold Polar Molecules in Optical Lattices

... from federally funded research, testing and training ... and agencies for Research Development Test and Evaluation ... Title : Ab Initio Study of Ultracold ...

DTIC Science & Technology

13
Ab Initio Studies on Hexavalent Phosphorus Compounds
2002-01-01

1 AB INITIO STUDIES ON HEXAVALENT PHOSPHORUS COMPOUNDS Ashley L. Wilson* Aberdeen High School Aberdeen, Maryland 21001 ...

DTIC Science & Technology

14
Ab Initio Studies on Hexavalent Phosphorus Compounds
2002-01-01

... Accession Number : ADA436055. Title : Ab Initio Studies on Hexavalent Phosphorus Compounds. Descriptive Note : Conference paper. ...

DTIC Science & Technology

15
Ab Initio Relativistic Study of Formation of Ultracold Polar ...
2006-01-31

... from federally funded research, testing and training ... agencies for Research Development Test and Evaluation ... Title : Ab Initio Relativistic Study of ...

DTIC Science & Technology

16
Ab Initio Quantum Chemical Study of Electron Transfer in ...

... Accession Number : ADA440631. Title : Ab Initio Quantum Chemical Study of Electron Transfer in Carboranes. Descriptive Note : Journal article. ...

DTIC Science & Technology

17
An ab initio QCISD Study of the Potential Energy Surface for ...
1998-09-01

... Abstract : Results are presented from ab initio quantum chemical calculations on the ground state potential energy surface for the open shell ...

DTIC Science & Technology

18
Ab Initio Study of the Electric Dipole Transition Moment for the ...
1990-12-01

... Rydberg I 'Flu state. Demoulin and Jungen (1974) used an ab initio quantum chemical approach, but only at the SCF level ...

DTIC Science & Technology

19
Ab Initio Study of the Electric Dipole Transition Moment for the ...
1990-12-01

... moment has been cancelled a priori for the electronic transition as a function of R(CC), using ab initio quantum chemical techniques including state ...

DTIC Science & Technology

20
An ab Initio Study of the Kinetics of the Reactions of ...
2000-04-06

... Kinetics of the Reactions of ... Descriptors : *REACTION KINETICS, *ENTHALPY, TRANSITIONS, HYDROXYL RADICALS, METHANES ...

DTIC Science & Technology

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21
Ab Initio Studies of Stratospheric Ozone Depletion Chemistry
1995-01-01

An overview of the current understanding of ozone depletion chemistry, particularly with regards the

NASA Technical Reports Server (NTRS)

22
Theoretical Studies of Silicon and Related Elements Reaction ...
1993-01-01

... eg, SiHl6= has a negative ionization potential. ... V. POTENTIAL ENERGY SURFACES AND DYNAMICS ... initio with effective core potentials, ab initio ...

DTIC Science & Technology

23
Quantum Chemical Studies of Candidate High Energy Density ...
1991-01-01

... Abstract : This report describes the development and application of ab initio quantum chemical methods that are especially relevant to the study of ...

DTIC Science & Technology

24
Additivity of Cation- Interactions: An ab Initio Computational Study on -Cation Sandwich Complexes

Additivity of Cation- Interactions: An ab Initio Computational Study on -Cation- Sandwich Complexes- sandwiches are the sums of the two corresponding TMA- systems. The contribution of electron correlation- sandwiches and to estimate their binding energies. Morokuma decomposition analysis on the binding energy

E-print Network

25
Theoretical Studies of Reaction Surfaces
1997-08-31

... goals of this program have been to develop new, more effective methods for performing accurate ab initio electronic structure calculations and to ...

DTIC Science & Technology

26
Research in Computational Astrobiology - NASA Technical Report ...

Ab initio studies of the spectroscopic properties of amino acids in the presence of water ...... geometrical, electrostatic, and quantum-chemical. ...

NASA Website

27
Quantum chemical calculation of the equilibrium structures of small metal atom clusters
1982-01-01

Metal atom clusters are studied based on the application of ab initio quantum mechanical approaches.

NASA Technical Reports Server (NTRS)

28
Quantum Theoretical Studies of Enzyme Inhibitors and ...
1986-07-14

... Abstract : This final technical report summarizes research on application of ab initio quantum chemical techniques to enzyme inhibitors such as ...

DTIC Science & Technology

29
Proceedings of the International Symposium on Quantum ...

... Molecular Orbital Studies on Nucleoside Antibodies VIII, Ab Initio Calculation of Cubic Force Constants in Formamide Monomer, Formamide Dimer ...

DTIC Science & Technology

30
Potential surfaces for O atom-polymer reactions
1987-01-01

Ab initio quantum chemistry methods are used to study the energetics of interactions of O atoms with

NASA Technical Reports Server (NTRS)

31
An ab initio benchmark study of the H + CO --> HCO reaction
1996-01-01

The H + CO --> HCO reaction has been characterized with correlation consistent basis sets at five

NASA Technical Reports Server (NTRS)

32
The Electronic Structure and Chemical Bonding of Hypermetallic Al5C by Ab Initio Calculations and Anion Photoelectron Spectroscopy
1998-12-01

The chemical structure and bonding of the hypermetallic Al5C and Al5C- species have been studied by photoelectron spectroscopy and ab initio calculations.

Energy Citations Database

33
Ab initio and density functional studies of hydrocarbon adsorption in zeolites.
1998-01-01

The adsorption energies of methane and ethane in zeolites are investigated with ab initio molecular orbital theory and density functional theory. In this work we have used zeolite cluster models containing two, three, and five tetrahedral (Si, Al) atoms a...

National Technical Information Service (NTIS)

34
Ab initio Studies of the Phase Transitions in K2SeO4.
1990-01-01

An ab initio model is developed for the potentials in ionic molecular solids in which the electron covalenc within the molecular ions substantially affects the interionic interactions. By treating the intermolecular and intramolecular interactions on the ...

National Technical Information Service (NTIS)

35
Ab Initio Studies of Transition-Metal Dihydrogen Chemistry.
1988-01-01

Examples of transition metal complexes containing dihydrogen ligands are investigated using ab initio electronic structure calculations employing effective core potentials. Calculated geometrical structures and relative energies of various forms of WL(sub...

National Technical Information Service (NTIS)

36
SnO2: BULK AND SURFACE SIMULATIONS BY AN AB INITIO

SnO2: BULK AND SURFACE SIMULATIONS BY AN AB INITIO NUMERICAL LOCAL ORBITALS METHOD A.V. POSTNIKOVa structure of ideal bulk SnO2 is well studied by ab initio calculations (Peltzer y Blanc�a, Svane study of several SnO2 surfaces, com- paring their energies of formation, and ...

E-print Network

37
Quantum Chemical Investigations of the Mechanism of Cationic Polymerization and Theoretical Prediction of Crystal Densities and Decomposition Pathways of Energetic Molecules.
1983-01-01

This study involves: Ab-initio crystal orbitals and polymer orbitals; Ab-initio coupled cluster program; Ab-initio quantum chemical calculations and electrostatic molecular potential contour maps for cationic polymerization; Prediction of crystal density;...

National Technical Information Service (NTIS)

38
Ab initio Monte Carlo investigation of small lithium clusters.
1999-01-01

Structural and thermal properties of small lithium clusters are studied using ab initio-based Monte Carlo simulations. The ab initio scheme uses a Hartree-Fock/density functional treatment of the electronic structure combined with a jump-walking Monte Car...

National Technical Information Service (NTIS)

39
Ab initio Determination of Structural and Dynamical Properties of Mg2Sn
2007-04-23

We have studied structural and dynamical properties of Mg2Sn by employing an ab-initio pseudopotential method and a linear response scheme, within the generalised gradient approximation. The calculated lattice constant, bulk modulus and pressure derivative of bulk modulus are in agreement with previous ab-initio calculations and ...

Energy Citations Database

40
Ab initio Determination of Structural and Dynamical Properties of Mg2Sn
2007-04-01

We have studied structural and dynamical properties of Mg2Sn by employing an ab-initio pseudopotential method and a linear response scheme, within the generalised gradient approximation. The calculated lattice constant, bulk modulus and pressure derivative of bulk modulus are in agreement with previous ab-initio calculations and ...

NASA Astrophysics Data System (ADS)

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41
Dynamical effects in ab initio NMR calculations: classical force fields fitted to quantum forces.
2010-08-28

NMR chemical shifts for an L-alanine molecular crystal are calculated using ab initio plane wave density functional theory. Dynamical effects including anharmonicity may be included by averaging chemical shifts over an ensemble of structural configurations generated using molecular dynamics (MD). The time scales required mean that ab ...

PubMed

42
Dynamical effects in ab initio NMR calculations: Classical force fields fitted to quantum forces
2010-08-01

NMR chemical shifts for an L-alanine molecular crystal are calculated using ab initio plane wave density functional theory. Dynamical effects including anharmonicity may be included by averaging chemical shifts over an ensemble of structural configurations generated using molecular dynamics (MD). The time scales required mean that ab ...

NASA Astrophysics Data System (ADS)

43
Quantum Chemical Study of Rare Gas/Halide Interactions as a ...
1994-11-01

... predicting known experimental molecular properties as well as properties predicted by other ab initio studies. Quantum chemical calculations are ...

DTIC Science & Technology

44
Quantum Chemical Studies of Candidate High Energy Density ...
1991-01-01

... of ab initio quaru cheiial methtods Lhat are espe,,.ally relevant to the study of high-energy density materials species. Two major quantum chemical ...

DTIC Science & Technology

45
An Ab Initio Study of Solid Nitromethane, HMX, RDX, and ...
2004-12-01

... 10 shows that the bond angles are also predicted more accurately for Cl20 than those of the other crystals in this study. We observe angle errors ...

DTIC Science & Technology

46
A Comparative Study of Nonlocal Density Functional Theory ...
1996-10-01

... Title : A Comparative Study of Nonlocal Density Functional Theory and ab initio Methods: The Potential Energy Surface of sym-Triazine Reactions. ...

DTIC Science & Technology

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